L446 entered service with Glasgow Corporation from Possilpark Garage in 1961. It was one of a number of "Big L"s operated by the Corporation, imaginatively named as they carried L prefix fleetnumbers indicating Leyland, and were 30ft long which was the maximum permitted length at the time. They were less popular with the crews than the smaller "Wee L"s.

L446 transferred with the rest of the fleet from Glasgow Corporation to GGPTE in 1973, now at Bridgeton Garage, and was sold to Smiths of Patna in September 1976. It was then sold into preservation in August 1984.

It unexpectedly returned to service on the Glasgow City Tour run by Glasgow Corporation Transport Limited between 2003 and 2004.

Sold with the Tour business to First Glasgow in March 2004, this bus was numbered PD2, or 39996 in the First national numbering scheme, operating from Larkfield Garage.

Finally, it was sold to Glasgow City Council for a return to preservation in 2006. It is presented in the final version of Corporation livery as delivered.

The photographs below show SGD 448 with Smith of Patna in 1983 and as it is now at the City Chambers